Sand pump



Dec, 30,

- c. H. BROWN SAND PUMP Filed March l4, 1922 2 Sheets-Sheet 1 A TTOR/VEYS Dec. 1924- 1,520,803

c. H. BRow'N SAND'PUMP Filed March l4,- 1922 2 Sheets-Sheet 2 WITNESSES INVENTOR C" 1 C H BROWN ,4 TTORNEYS Patented Dec. 30, 1924.

UNITED STATES CHARLES HENRY BROWN, 0F BRECKENRIDGE,

SAND PUMP.

Application filcd. March 14, 1922. Serial No. 543,729.

-To all whom it mag concern:

Be it known that I, CHARLES H. BROWN, a citizen of the United States, and resident of Breckenridge, in the county of Stephens and State of Texas, have invented certain new and useful Improvements in Sand Pumps, of which the following is a specification.

This invention relates to cleaning means for oil wells and resides broadly in the combination of a sand pump and an object receiving trap known generally in the art as a mouse trap.

An important object of the invention is to provide novel means whereby an object trap which as stated above is known in the art as a mouse trap may be conveniently connected to a sand pump so as to receive and-trap such objects as broken underreamer lugs, slips, sledges, dropped in the well, springs lost in fishing etc., and various other articles.

In sand pumps now in use the restricted entrance opening of the pump prevents the aforesaid objects from being picked up by the pump so that a Separate tool must be inserted into the well for removing these objects and by the use of this invention it is possible to remove such objects as underreamer lugs simultaneously with the pumping operation. I

A further object is toprovide an oil well working device wherein the lower end of the same -is scalloped so as to provide a means for permitting lugs and metallic objects to enter the same late-rally.

A further object is to provide a pump of the character specified which is of highly simplified construction durable in use and cheap to manufacture.

Other objects and advantages of the invention will be apparent during the course of the following description.

Figure 5 is a detail sectional view through the lower portion of the trap, the view illustrating a slightly modified arrangement.

Figure 6 is a horizontal sectional View taken on line 66 of Figure 2.

Figure 7 is a. horizontal sectional view taken on line 77 of Figure 2.

Figure 8 is a detail sectional view illustrating a slightly modified form of object trapping means.

In the drawing the numeral 10 designates the tubular body of a pump, and the numeral 11 designates a plunger mounted for reciprocation within the body 10 and having connection with a plunger rod 12 by means of which the pump may be operated. \Vith reference to Figure 2 it will be observed that the plunger 11 is provided with a hinge valve 13 which extends over an opening 14 in the lower end of the plunger and provides a means for allowing material such as slush to enter the space above the plunger. In the lower portion of the section. 10 is provided a detachable tubular member 18 held in position by means of radially arranged pins 20 received in L-shaped slots 22 in the lower portion of the body 10. hen the radially arranged pins 20 are arranged in the horizontal branches of the L-shaped slots 22 the same are engaged by locking springs 24 which act to hold the pins securely in position.

The upper portion of the detachable 'section 18 is' provided with an opening 25 covered by a valve 26 hingedly supported as indicated at 27. It will be seen that the valve 26 forms a means for allowing mate rial to enter-the section 10 while at the same time pre enting the loss of the material.

Broad y stated the invention forming the subject matter of this application consists in combining sand pumps. with what is known in the art as a mouse trap so that objects such as broken underreamer lugs, slips and the. like may be withdrawn from the well at the same time the pumping operation is performed. I

The trap is provided with a tubular body 30 having its rear portion reduced to provide an attaching member 33 exteriorly screw threaded for insertion into the thfeaded forward end of the section 18.

The forward end of the trap 30 is scalloped as indicated at 35 for the reception of material which enters from the side and for the reception of the aforesaaid objects.

In use the scalloped lower end of the trap is engaged with the bottom of the well and as the pumping operation progresses the trap is lowered further into the well and the material drawn into the trap elevates a plurality of trapping arms 38 having diverging fingers 39 which as illustrated in Figure 4 form a framework or skeleton. which prevents the loss of articles confined within the tubular body 30. When the trapping arms 38 are in their normal position they are supported within the casing by means of pivot elements 40 which extend through ears 41 formed on the upper sides of the arms. The rear portion of the arms 38 terminate in downwardly directed lugs 42 contacting with the sides of the body 30 and thereby limit the downward move-. ment of the arms.

On the otherhand the arms 38 are limited in their upward movement by means of a plurality of radially arranged stop lugs 46 so that the arms are prevented from swinging outwardly when elevated and engaging the walls of the member 30.

The construction illustrated in Figure 5 is especially adapted for use in trapping drill bits and the like and consists in a pair of pivoted arms 50 having their rear portions formed with ears 51 through which pins 52 are extended. The arms 50 have their lower portions provided with downwardly directed lugs 54 which contact with hearing shoulders 55 formed on the inner side of the .trapping body which is designated by the numeral 57. It will be seen that the tubular body 57 is provided with slots 58, the lower ends of which are engaged by the ears 51 so as to relieve the pivot element 52 of the strain incident to supporting the weight of the objects within the body.

In the form of the invention illustrated in Fig. 8, the trapping body is designated by the numeral 60 and is provided with a single arm 61 pivotally supported as indicated at 62 and having its lower portion received within a slot 63 in the wall of the body. It will be seen that the lower wall of the slot 63 is engaged with the rear portion of the arm 61 so as to take up the strain incident to the arrangement of weighted objects within the trapping body.-

In operation the particular formation of the fingers at the ends of the arms of the trap effectively prevent the objects received within the trap from falling out and also objects which are comparatively large may enter the trap without interference by the arms.

The trap may be made in a variety of sizes in which case the attaching portion 33 of each would be of the same size so that it may be threaded into the lower portion Having thus described the invention, what I is claimed is 1. An article removing device for wells comprising a tubular body having its forward portion enlarged, a plurality of trapping-arms pivoted within the enlarged portion of said body, and secondary trapping means arranged in the rear portion of the body and comprising spaced superposed valves.

2. An article removing device for wells comprising a tubular body having its forward portion enlarged, a plurality of trapping arms pivoted within the enlarged portion of said body, secondary trapping means arranged in the rear portion of the body, and a plunger slidable in said body rearwardly of said secondary trapping means for drawing the article or articles into the body.

3. An article for removing objects from wells comprising a tubular body, a plurality of trapping arms pivoted in the forward portion of said body, secondary trapping means arranged in the rear portion of the body, and a plunger slidable in said body rearwardly of said secondary trapping means for. drawing the article into the body, said plunger being provided with a oneway valve.

4. An article removing device for wells comprising a tubular body having its forward portion enlarged, a plurality of trapping arms pivoted within the enlarged portion of said body, secondary trapping means arranged in the rear portion of the body, a plunger slidable in the rear portion of said body for drawing the article or articles into the body, the forward portion of the body being scalloped for the entrance of articles laterally into the body.

5. An article removing device for wells comprising a tubular body having its forward portion enlarged. a plurality of trapping arms pivoted within the enlarged portion of said body, secondary trapping means arranged in the rear portion of the body, and a plurality of inwardly directed stop lugs carried by the inner side of the body and arranged in the path of travel of the trapping arms whereby to limit the outward swinging movement of the same.

CHARLES HENRY BROWN. 

